The utility model relates to
calcium carbonate grinding technical field, concretely is vertical mill grinder
grinding device of two -stage
grinding, grinding
assembly includes grinding bucket, the fixed screw is
annular array distribution at the outer wall of grinding bucket. The vertical mill grinder grinding device of two -stage grinding, the
calcium carbonate that needs to polish is placed in the grinding bucket through the feed inlet, and the rotation of the
rotating disc is driven through the external motor simultaneously, makes the
calcium carbonate in the grinding bucket constantly through the
polishing piece and the
polishing roller and rotates, in the process of rotating, the
calcium carbonate is constantly polished and makes it gradually moves back, and the
polishing roller is circular truncated cone, the
calcium carbonate is smaller and smaller in the process of constantly moving back, the polished
calcium carbonate powder is accumulated at fixed disc no.